We design and explore a shortcut to adiabaticity (STA) for changing the interaction strength between two ultracold, harmonically trapped bosons. Starting from initially uncorrelated, non-interacting particles, we assume a time-dependent tuning of the inter-particle interaction through a Feshbach resonance, such that the two particles are strongly interacting at the end of the driving. The efficiency of the STA is then quantified by examining the thermodynamic properties of the system, such as the irreversible work, which is related to the out-of-equilibrium excitations in the system. We also quantify the entanglement of the two-particle state through the von Neumann entropy and show that the entanglement produced in the STA process matches that of the desired target state. Given the fundamental nature of the two-atom problem in ultracold atomic physics, the presented shortcut can be expected to have significant impact on many processes that rely on inter-particle interactions.
Cited by 5
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Alan Kahan et al., Driving Interactions Efficiently in a Composite Few-Body System
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Dionisis Stefanatos et al., Efficient generation of the triplet Bell state between coupled spins using transitionless quantum driving and optimal control
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D. Guéry-Odelin et al., Shortcuts to adiabaticity: Concepts, methods, and applications
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G. Bougas et al., Analytical treatment of the interaction quench dynamics of two bosons in a two-dimensional harmonic trap
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- 1 Thomas Fogarty,
- 1 Lewis Ruks,
- 1 Jing Li,
- 1 Thomas Busch